Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Significant Accounting Policies [Line Items]
Cost of revenue	$ 83.8	$ 60.7	$ 154.9	$ 113.6
Accounting Standards Update [Extensible List]					us-gaap:AccountingStandardsUpdate201613Member
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4.1		3.8
Provision for expected credit losses	2.0		2.6	2.0
Write-offs charged against allowance	(1.6)		(3.1)
Recoveries of amounts previously written-off	0.1		0.2
Ending balance	4.6		4.6		$ 3.8
Cumulative Effect, Period of Adoption, Adjusted Balance
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4.1		4.9
Ending balance					4.9
Cumulative Effect, Period of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	0.0		1.1
Ending balance					1.1
Cumulative Effect, Period of Adoption, Adjustment | Accumulated Deficit
Significant Accounting Policies [Line Items]
Increase of accumulated deficit					$ 1.1
Accounts and unbilled receivables
Significant Accounting Policies [Line Items]
Reclassification of prior period amounts				(1.6)
Prepaid expenses and other assets
Significant Accounting Policies [Line Items]
Reclassification of prior period amounts				(1.6)
Selling, general and administrative expenses
Significant Accounting Policies [Line Items]
Reclassification of prior period amounts	0.7		1.3
Research and development expenses
Significant Accounting Policies [Line Items]
Reclassification of prior period amounts	0.7		1.3
Shipping and Handling
Significant Accounting Policies [Line Items]
Cost of revenue	$ 1.9	$ 2.3	$ 3.8	$ 4.9